For some reason I have a mental block and can’t seem to remember this, but instead of using dism to install language packs on Windows 7 or above, like this…
dism /online /add-package /packagepath:<path to language pack .cab file>
…you can also simply rename the .cab language pack file to have the .mlc file extension and double-click it.
There’s yet another way too, and that’s to run the lpksetup.exe utility and point it at your .cab file I think. Haven’t tried that though as I think the .mlc method is easier.
Now that Windows 8 has hit RTM there is a slightly newer version of Orca the MSI editing tool available. This one is version 5.0.9200.0, but when it’s installed, in the Programs and Features dialog it’ll show up as 8.59.25584.
To grab yourself a copy get the Windows SDK for Windows 8, install using the option to ‘download for installation on a separate computer‘, and make sure only ‘Windows Software Development Kit‘ is selected in the features list. You won’t be able to de-select the .NET 4 download.
After your download is complete you can either install Orca from the download directory, or collect up the files you need to keep a copy for use later on. The files you’ll need are listed here and are linked directly to Microsoft download location for ease of collection:
To install Orca just double-click on Orca-x86_en-us.msi and allow it to install. Job done!